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' C. BAXTER. MBANS FOR INDIVIDUALLY CONTROLLING A NUMBER OF DEVICES BY ELEGTRIGITY- No. 367,332. Patented Jul 26 1887.

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CONTROLLING A NUMBER OF DEVICES BY ELECTRICITY.

Patented. July 26, 1887.

MBANS'POR INDiVIDUALLY ,-IN:VEIVT0R 2 J BY (N0 Model.)

3 SheetsSneet 3v C. 'BAXTER. MEANS FOR INDIVIDUALLY CONTROLLING A NUMBER OF DEVICES BY ELECTRICITY. I No. 367,332; f Patented July 26', 1887.

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INVENTOR ATTORNEY}? PATENT OFF cE.

ZHANNING BAXTER, or BROOKLYN, NEW YORK.

MEANS FOR INDIVIDUALLY CONTROLLING A NUMBER OF DEVIlIES BY ELECTRICITY.

SPECIFICATION forming part of Letters Patent No. 367,332, dated July 26,

A rmlication filed January 21, 1887. Seriall-Xo. 224,992. (No model.)

cuits, so as to cause a proper operation of the magnets.

My invention is designed more particularly with reference to electric annunciators, bells, and such other devices as require to be individually controlled at a number of different points.

By the use of myinvention' a two-hundredand-iifty-drop annunciator may be operated by the employment of thirty-five or less magnets and thirty-five or less leading-wires car-' ried to the circuit-closers; or .push buttons. An increasing economy iii-the number of magnets and wires is secured with annunciators having a larger number of drops.

lily invention consists in controllingaseries of devices individually by ditferent'combiuw tions of series of magnets in pairs, a different pair being used to control the operation of each device, and the conjoint action of the two magnets being required to effect the operalion. ()u this principle five magnets .would serve to control separately ten annunciatordrops or other dcviccsfand by the employment of six magnets fifteen different drops could be controlled, that being the number of possible binary combinations of the six magnets. Suitable circuit-closers and circuits are employed for simultaneously bringing the magnets into action in the several different pairs or combinations.

My invention consistsprefcrably, in the employment of magnets arranged in two sets, and in controlling or operating each of the several annunciator-drops or other devices requiring to be controlled or operated by a pair of magnets, one from each-set, the pairs employed in coulrolliug theseveral annunciator-drops or other devices on the whole board or frame being different for the several drops.

.a modified arrangement of circuits.

IiI' combination with the two sets of magnets, two corresponding sets of leading wires or conductors are carried to the circuit-controllers or push-buttons, which latter are.

properly arranged to bring into simultaneous action any desired pair of circuits and magnets, the pair governed corresponding to the particular drop or other device whichit is desired to actuate or control;

My invention consists,also,in certain details of construction and improved combinations of devices particularly applicable to an electric annunciator for use, in hotels or other buildings; The conjoint control of the several devices by different pairs of magnets may be effected either electrically or mechanically, though I prefer to use mechanical devices on account of the greater simplicity attained. Many different devices suitable for the purpose will readily occur to skilled mechanics.

Figurel of the accompanying drawings is an elevation of an auuunciato'r-frame, showing devices constructed and arranged in accordance with my invention and adapted to con-- trol nine several annuneiator-drops. is a horizontal cross-section on the line 3 3 Fig. 1.

the line X Xof Fig. 1. Fig. 4 is adiagram of circuits and apparatus illustrating the princi- Fig. 5 is a diagram of Figs. 6 and 7 illustrate equivalent means for obtaining a conjoint control of the various drops or other devices by different pairs of magnets.

In Fig. 1 of the drawings the devices for nine annunciatordrops are. shown, and the magnets are divided into two sets, three in each set, thereby giving nine different pairs or combinations of magnets in the two indi vidual sets. 0 indicates the frame in which the several parts of the annunciator are mounted. A A A indicate the magnets of one setfand B B B the magnets of the other set. Magnets A Work on rods A A A suitably mounted in the frame, and magnets B work on ple of my invention.

another set ofrods, 13 B' B' which latter are,

Fig. 2-

Fig. 3 isa vertical cross-section on Ico I 5 said bar against a proper stop and in position for holding t-heannunciator-drop up. The movement of the bar under the acti'onof the magnet is also limited by'a suitable stop, as indicated at m, Fig. 1. Each rod or bar A IO carries a stop pin or arm, a, which normally rests underneath the-latch E of the annuncia- -tordrop D, sustaining'said drop in a horizontal position. Each rod or bar B carries prd jecting pinsor arms b, which also normally rest in position tohold the drops up. When, however,the bars B are rotated,the pins swing downward and are thereby disengaged from. the drops. Eachdrop is normally held up by a pinaof one .rod Ain one set and a pin b of a rod B of the other set. The aununciator-drop D is of anyidesired construction, and is here shown as pivoted on a rod or shaft, K, properly mounted on the frame. The latch Fis pivoted at G on the drop, and .the stop-pins normallyengage with said latch. QW'hen'j both pins a b are disengaged from the latch, and only then, the corresponding aunuuciator-drop swings down into a vertical plane. .The latch-pen mits the drop to be returned to normal position, the latch giving way,so as to passthe stops. The rod, K forms'the resettingrod," and for this purpose carries the pin indicated at E, which engages with the dropat its hinged portion, for the purpose of raising the latter to its normal position.

When any rod A is operated and one of the rods B is simultaneously operated,one. only of the annunciatondrops which engage with the pins onthe rod A will dropto wit, that one which also engages with the simultaneously-operated rod B. The remaining drops will not be disengaged,because one only of the, pins or detents holding them is moved, and they are therefore held from movement by the pins or dctents on the rods B that re main at rest. It will be plain, therefore, that to operate any annunciator'drop a particular pair of magnets-one in each of the two sets A B-reqnircs to be operated. If, for instance,

drop 5 is to be released, the pair formed bythe two middle rods, A BZ-or. those which intersect opposite drop 5, must be actuated. No otherdrop will fall at the .same time, because in the case of drops 6 and 4 they are held up by the pins of the two extreme rods AA, while in the case of drops 2 and 8 they are held up. bythe pins b of the upper and lower rodsfl? B.

In the diagram, Fig. 4,-circuit closers or controllers numbered correspondingly to the annunciator-drops are indicated. The pushbuttons or circuit-controllers 1 2 3 may be on we floor of the building and the remaining buttons on floors corresponding to the'horizontal lines in which they are shownarranged. From the controlling-magnets 'runthe two sets of conductors or wires, as indicated, those from the upper magnet, 13, running puslrbuttons onone floor and those from the other two magnets of the set running to pushbuttous on-c0rresponding floors. The'conductors running from the set of magnets A run likewise to all the push-buttons of the se ris,'as indicated so that any pair of magnets, one in each set, each such pair corresponding to a particular annunciator-drop, may be operated.

If desired, the push-buttons may be the ordiuary push-buttons now employed and connected into circuit between the several leading wires or conductors, as shown, so that if, for instance, push-button 3 be closed it will simmy close the connection between leading-wires 6 1. Similarly, if pushbntton 8 be closed, it would close the connection bhtwcen leadingwires 3 5, and so on through the various combinations of magnets in pairs, one from each set.

I prefer to arrange the operating-battery M B in the manner shown-that is to say, with its one pole connected to the magnets B, and with its other pole to the magnet A, so that the closure of any'pair of circuits of the two sets will closethe circuitof the battery'through the desired pair of magnets. By this arrangement of the push-bnttons, battery, and sets ofmagnets I attain the maximum simplicity. The simultaneous operation of the two magnets may, however, be produced by the employment of a compound circuit-controller and independent leading-wire circuits for the rarious magnets, as indicated in Fig. 5. In this case aseparate battery is supposed to be employed for each magnet, and the circuit-controlling device is made in two parts, one conhected to each wire of the pair requiring to be operated as indicated. In this instance a dcprcssion of the push-button or circuit-controller simply completes the circuit for each independent leading-wire to ground or to a suitable return'conductor. I

An equivalent way of controlling the releasing devices by the conjoint operation of the two magnets is indicated in Fig. 6. In this case the annunciator-drop itself is made movable,in order to effect its release from the dctent, (such movement of the annunciator-drop itself is ina'de movable, in order to effect its release from the detent,) such movement of the annnnciator-drop taking the place of the movement of the second of the simultaneously-op erated pins a b. The rod K, carr ing said annunciator, is properly-mounted 'o as to be longitudinally movable, and has an armature secured to it. The rod A, carries the stop-pin a, as before, and the nidvement of said rod moves the detent-stop a to one side, but not far enough todisengage the drop. A further movement, however, of the drop itself with relation to the stop completes the disengagement, such further movement being prod need by the operation of the magnet B,which draws the rod longitudinally, so as to carry the drop away from the detent. When the rod A and ITO pin a engaging with any particular drop are not moved the longitudinal movement of the rod K, carrying the said drop, is not sufficient to cause disengagement. It is evident that in this form of the invention the rods K take the place of the rods B".

If desired, two pins or detents may be em-' ployed instead of the one shown-in l ig. 6. This modification is illustratediu Fig.7 ,where the movement of the pin a is sufiicient to enciator-cards or other devices maybe effected by various other mechanical devices which will readily occur to skilled mechanics. I do not, however, limit myselfto any particular mechanical devices, since it is obvious that my invention may be carried out by any devices properly constructed to require a simultaneous action of thetwo magnets of the particular pair v assigned to theparticular'drop or other device which it is desired to operate. Nor do Ilimit myself to any particular means for bringing into action the desired pair of magnets, one in each set,the essence of the invention consist.

ing in dividing the magnets into sets connected by separate conductors with suitable circuitcontrolling devices adapted to control simultaneously the desired pairs of circuits or leading-wires connected to the magnets whose conjoint action is required in order that a device may be operated.

' .The manner of dividing the magnets into sets will vary with the particular number of annunciator-drops or'other. devices which it is desired to control. which is the square of any whole number the largest economy \vould be secured by dividing the magnets into two sets having an equal number in each. In the case of other numbers it is desirable to divide them into sets, each having as large a number as possible; for instance,

- in the case of a five-hundred-drop annunciator the largest economy would be attained by the employment of two sets, one having twenty and the other having twentyfivemagnets, since in such case but forty-five magnets and leading-wires would be required in all.

It would of course be possible to use two sets, one having ten and the other fifty magnets, since this would'give the desired number of combinationsofpairs; but in such case sixty niagnetsinall would be required instead of forty-five.

a bell to ring whenever a tag drops by the employ ment of devicessuch as are commonly used in the art. For instance, each of the rods ,of one set may carry'a stud or pin that shall engage with an'insulated spring, as indicated in Fig. 2, when the rod.is turned, said spring being connected to one pole df the.alarm-bell circuit, while the frame and rod are connected- In the case of a number I Theannunclator may be constructed to cause spectively, by two different magnets, one magas and for the purpose described.

to the opposite pole of the same in a way well understood in the art.

What I claim as my invention is'- 1. The combination, with the two sets of electro-magnets, of the two sets of rods or bars controlled thereby and arranged with the bars of each set transverse to the bars of the other set, and annunciator drops or flaps, each having a detent mechanism under the conjoint control of a pair of rods or bars, one bar or rod from each set.

2. The combination, with the two sets of bars or rods arranged on intersecting lines, of the annunciator-drops placed at the points of intersection, and detent orstop devices for permitting the drop to fall on the simultaueons operation of the two rods or bars at whose intersection the drop is located.

3. .The combination, with the two sets of in- I tersectingrock-bars, of the drops placed-at'the points of intersection, and stop-pins, one on each bar, normally engaging with said .drop,

.4. The combination, with a number of lead ing-wires, of a series of annunciator drops or indicators, each subject to the control of a single pair of releasing devices governed, rc-

net being in one and the other in another of the leadtng wires, asand for -the purpose described. 4

5. Thecombination,with theseries of leading wires and their circuit-controllers for governing the same in different combinations, of the different corresponding combinations or pairs v of releasing detents or stops and electro-r'nagnets, the latter acting each upon a single detent or stop of a pair, and a series of devices individually subject to the conjoint control of the detents or stops of a single pair or combination. I

6. The combination, with a number of electro-magnets and a series of double releasing or I 0 operating mechanisms mechanically connected with each. device and respectively under the control of magnetsinldifi'erent combinations, of a series of leading-wires and a series of cit-- cuit-closing devices for closing the circuits of H5 corresponding combinations of wires and magnets, as andfor the purpose described.

7. The combihation of two sets of electromagnets, a. series...et{ devices, each subject to the conjoint mechanical control of a single 1 pair of magnets only, one in each set, the pair adapted to operateeach devicebeing different. from that required-for operatiing another device, two sets of conductorsleading from said sets of magnets,.and a seiics o circuit-con.- 25 trollers corresponding to theeontrolled 'de-I vices and adapted to close the circuitfil/acor responding pair of conductors, oniniach set.

Signed at New York, in theeountyfNeW York and State of New York, this 17th uayzor r30 January, A. D. 1887. I Y. 4

Witnesses: OHANNING BAXTER.

WM. H. CAPEL," GABRIEL J. W. enema. 

